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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Missing at idle on cold start



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      11-22-2012, 03:54 PM   #1
ihbase
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Missing at idle on cold start

40 degree overnight. Engine missing lightly on cold start and evens out as soon as it warms up. 5k miles. Anyone else with this issue? I'm guessing injector.

Other modern diesels run glow plugs or intake heater grid sometimes after startup without triggering the indicator light. Does this engine use glow plugs sometimes without illuminating the glow plug light? If so, could be a bad glow plug.

$0.35 premium for diesel today. Now a cylinder miss. Still hate the auto box. This appeal of this car is waning fast...

425 ft. lbs is pretty cool. But the car is beginning to feel more like a fashion accessory than a solid piece of equipment.

Has anyone else had an engine miss when cold and, if so, what was the remedy?

Thanks-

-Michael
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      11-24-2012, 06:35 PM   #2
SomeRandomer123
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My old E90 LCI 330d did this.
Glow plug control unit failed.
On the diagnosis tool, it will say that all 6 glow plugs have failed but as you would expect, this is not the case and it's the control unit.
New one was fitted and it was good to go again!
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